rest_handler.rb in soaspec-0.3.1

- old
+ new
@@ -1,307 +1,307 @@
-# frozen_string_literal: true
-
-require_relative 'exchange_handler'
-require_relative 'rest_parameters'
-require_relative 'rest_parameters_defaults'
-require_relative 'rest_exchanger_factory'
-require_relative '../core_ext/hash'
-require_relative '../errors'
-require_relative 'handler_accessors'
-require_relative '../interpreter'
-require_relative 'response_extractor'
-require_relative 'request/rest_request'
-require 'json'
-require 'jsonpath'
-require 'nori'
-require 'erb'
-
-module Soaspec
-  # Wraps around Savon client defining default values dependent on the soap request
-  class RestHandler < ExchangeHandler
-    include ResponseExtractor
-    extend Soaspec::RestParameters
-    include Soaspec::RestParametersDefaults
-    extend Soaspec::RestExchangeFactory
-
-    # User used in making API calls
-    attr_accessor :api_username
-
-    # Setup object to handle communicating with a particular SOAP WSDL
-    # @param [Hash] options Options defining REST request. base_url, default_hash
-    def initialize(name = self.class.to_s, options = {})
-      raise "Base URL not set! Please set in class with 'base_url' method" unless base_url_value
-
-      if name.is_a?(Hash) && options == {} # If name is not set, use first parameter as the options hash
-        options = name
-        name = self.class.to_s
-      end
-      super
-      set_remove_keys(options, %i[api_username default_hash template_name])
-      @init_options = options
-      init_merge_options # Call this to verify any issues with options on creating object
-    end
-
-    # @return [Boolean] Whether REST method should have a payload
-    def payload?(overall_params)
-      case overall_params[:method]
-      when :post, :patch, :put
-        true
-      else
-        false
-      end
-    end
-
-    # @todo Use this in actually making the request
-    # At the moment this is just for one to manually view the parameters
-    # that will be used in making a request
-    # @return [RestRequest] Parameters used in making a request
-    def request_parameters(override_parameters)
-      overall_params = interpret_parameters(override_parameters)
-      request = { overall: overall_params, options: init_merge_options }
-      request[:body] = post_data(overall_params) if payload?(overall_params)
-      RestRequest.new(overall_params, init_merge_options, payload?(overall_params) ? post_data(overall_params) : nil)
-    end
-
-    # Interpret REST parameters given provided parameters and adding defaults, making
-    # transformations
-    #
-    # @param [Hash] request_parameters Parameters used in making a request
-    # @return [Hash] Request parameters merged with default values
-    def interpret_parameters(request_parameters)
-      request_parameters[:params] ||= {}
-      request_parameters[:method] ||= :post
-      suburl = request_parameters[:suburl]
-      if suburl
-        if suburl.is_a? Array
-          request_parameters[:suburl] = suburl.collect(&:to_s).join('/')
-        else
-          request_parameters[:suburl] = suburl.to_s
-        end
-      end
-      # Use q for query parameters. Nested :params is ugly, long and unclear
-      request_parameters[:params][:params] = request_parameters[:q] if request_parameters[:q]
-      request_parameters
-    end
-
-    # Override this with 'after_response' within class definition to perform an action
-    # after response is retrieved
-    # @param [RestClient::Response] _response Response to interpret to perform after block
-    def after_response(_response, _self); end
-
-    # Used in together with Exchange request that passes such override parameters
-    # @param [Hash] override_parameters Params to characterize REST request
-    # @option override_parameters [Hash] :params Extra parameters (E.g. headers)
-    # @option override_parameters [String] suburl URL appended to base_url of class
-    # @option override_parameters [Hash] :q Query for REST
-    # @option override_parameters [Symbol] :method REST method (:get, :post, :patch, etc)
-    # Following are for the body of the request
-    # @option override_parameters [Hash] :body Hash to be converted to JSON in request body
-    # @option override_parameters [String] :payload String to be passed directly in request body
-    # @option override_parameters [String] :template_name Path to file to be read via ERB and passed in request body
-    # @return [RestClient::Response] Response from making request
-    def make_request(override_parameters)
-      @merged_options ||= init_merge_options # TODO: Is this var needed? Can method be passed to resource creation?
-      test_values = interpret_parameters override_parameters
-      # In order for ERB to be calculated at correct time, the first time request is made, the resource should be created
-      @resource ||= RestClient::Resource.new(ERB.new(base_url_value).result(binding), @merged_options)
-      @resource_used = test_values[:suburl] ? @resource[test_values[:suburl]] : @resource
-
-      self.exception = nil # Remove any previously stored exception
-      begin
-        response = case test_values[:method]
-                   when :post, :patch, :put
-                     Soaspec::SpecLogger.info("request body: #{post_data(test_values)}")
-                     @resource_used.send(test_values[:method].to_s, post_data(test_values), test_values[:params])
-                   else # :get, :delete
-                     @resource_used.send(test_values[:method].to_s, test_values[:params])
-                   end
-      rescue RestClient::Exception => e
-        self.exception = e
-        raise e unless e.respond_to? :response
-
-        response = e.response
-      end
-      Soaspec::SpecLogger.info("response: \n  headers: #{response&.headers}\n  body: #{response}\n")
-      after_response(response, self)
-      response
-    end
-
-    # Add values to here when extending this class to have default REST options.
-    # See rest client resource at https://github.com/rest-client/rest-client for details
-    # It's easier to set headers via 'headers' accessor rather than here
-    # @return [Hash] Options adding to & overriding defaults
-    def rest_resource_options
-      {}
-    end
-
-    # Perform ERB on each header value
-    # @return [Hash] Hash from 'rest_client_headers' passed through ERB
-    def parse_headers
-      Hash[rest_client_headers.map do |header_name, header_value|
-        raise ArgumentError, "Header '#{header_name}' is null. Headers are #{rest_client_headers}" if header_value.nil?
-
-        [header_name, ERB.new(header_value).result(binding)]
-      end]
-    end
-
-    # Initialize value of merged options
-    # @return [Hash] Hash of merged options
-    def init_merge_options
-      options = rest_resource_options
-      options.merge! basic_auth_params if respond_to? :basic_auth_params
-      options[:headers] ||= {}
-      options[:headers].merge! parse_headers
-      options[:headers][:authorization] ||= ERB.new('Bearer <%= access_token %>').result(binding) if Soaspec.auto_oauth && respond_to?(:access_token)
-      options.merge(@init_options)
-    end
-
-    # @param [Hash] format Format of expected result.
-    # @return [Object] Generic body to be displayed in error messages
-    def response_body(response, format: :hash)
-      extract_hash response
-    end
-
-    # @return [Boolean] Whether response body includes String
-    def include_in_body?(response, expected)
-      response.body.include? expected
-    end
-
-    # @@return [Boolean] Whether the request found the desired value or not
-    def found?(response)
-      status_code_for(response) != 404
-    end
-
-    # @return [Boolean] Whether response contains expected value
-    def include_value?(response, expected)
-      extract_hash(response).include_value? expected
-    end
-
-    # @return [Boolean] Whether response body contains expected key
-    def include_key?(response, expected)
-      value_from_path(response, expected)
-    end
-
-    # @return [Integer] HTTP Status code for response
-    def status_code_for(response)
-      response.code
-    end
-
-    # Returns the value at the provided xpath
-    # @param [RestClient::Response] response
-    # @param [String] xpath Path to find elements from
-    # @param [String] attribute Attribute to find path for
-    # @return [Enumerable] Value inside element found through Xpath
-    def xpath_elements_for(response: nil, xpath: nil, attribute: nil)
-      raise ArgumentError unless response && xpath
-      raise "Can't perform XPATH if response is not XML" unless Interpreter.response_type_for(response) == :xml
-
-      xpath = prefix_xpath(xpath, attribute)
-      temp_doc = Nokogiri.parse(response.body).dup
-      if strip_namespaces? && !xpath.include?(':')
-        temp_doc.remove_namespaces!
-        temp_doc.xpath(xpath)
-      else
-        temp_doc.xpath(xpath, temp_doc.collect_namespaces)
-      end
-    end
-
-    # @return [Enumerable] List of values matching JSON path
-    def json_path_values_for(response, path, attribute: nil)
-      raise 'JSON does not support attributes' if attribute
-
-      JsonPath.on(response.body, path)
-    end
-
-    # Calculate all JSON path values based on rules. ',', pascal_case
-    # @param [RestClient::Response] response Response from API
-    # @param [Object] path Xpath, JSONPath or other path identifying how to find element
-    # @param [String] attribute Generic attribute to find. Will override path
-    # @param [Boolean] not_empty Whether to fail if result is empty
-    # @return [Array] Paths to check as first and matching values (List of values matching JSON Path) as second
-    def calculated_json_path_matches(path, response, attribute, not_empty: false)
-      path = add_pascal_path(path)
-      paths_to_check = path.split(',')
-      paths_to_check = paths_to_check.map { |path_to_check| prefix_json_path(path_to_check) }
-      matching_values = paths_to_check.collect do |path_to_check|
-        json_path_values_for(response, path_to_check, attribute: attribute)
-      end.reject(&:empty?)
-      raise NoElementAtPath, "No value at JSONPath '#{paths_to_check}' in '#{response.body}'" if matching_values.empty? && not_empty
-
-      matching_values.first
-    end
-
-    # Based on a exchange, return the value at the provided xpath
-    # If the path does not begin with a '/', a '//' is added to it
-    # @param [RestClient::Response] response Response from API
-    # @param [Object] path Xpath, JSONPath or other path identifying how to find element
-    # @param [String] attribute Generic attribute to find. Will override path
-    # @return [String] Value at Xpath
-    def value_from_path(response, path, attribute: nil)
-      path = path.to_s
-      case Interpreter.response_type_for(response)
-      when :xml
-        result = xpath_elements_for(response: response, xpath: path, attribute: attribute).first
-        raise NoElementAtPath, "No value at Xpath '#{prefix_xpath(path, attribute)}' in '#{response.body}'" unless result
-        return result.inner_text if attribute.nil?
-
-        return result.attributes[attribute].inner_text
-      when :json
-        matching_values = calculated_json_path_matches(path, response, attribute, not_empty: true)
-        matching_values.first
-      else # Assume this is a String
-        raise NoElementAtPath, 'Response is empty' if response.to_s.empty?
-
-        response.to_s[/#{path}/] # Perform regular expression using path if not XML nor JSON
-      end
-    end
-
-    # @return [Enumerable] List of values returned from path
-    def values_from_path(response, path, attribute: nil)
-      path = path.to_s
-      case Interpreter.response_type_for(response)
-      when :xml
-        xpath_elements_for(response: response, xpath: path, attribute: attribute).map(&:inner_text)
-      when :json
-        result = calculated_json_path_matches(path, response, attribute)
-        result || []
-        # json_path_values_for(response, path, attribute: attribute)
-      else
-        raise "Unable to interpret type of #{response.body}"
-      end
-    end
-
-    # @return [RestClient::Request] Request of API call. Either intended request or actual request
-    def request(response)
-      return 'Request not yet sent' if response.nil?
-
-      response.request
-    end
-
-    # Work out data to send based upon payload, template_name, or body
-    # @return [String] Payload to send in REST request
-    def post_data(test_values)
-      data = if @request_option == :hash && !test_values[:payload]
-               test_values[:payload] = JSON.generate(hash_used_in_request(test_values[:body])).to_s
-             elsif @request_option == :template
-               test_values = test_values[:body].dup if test_values[:body]
-               test_values = IndifferentHash.new(test_values) # Allow test_values to be either Symbol or String
-               Soaspec::TemplateReader.new.render_body(template_name, binding)
-             else
-               test_values[:payload]
-             end
-      # Soaspec::SpecLogger.info "Request Empty for '#{@request_option}'" if data.strip.empty?
-      data
-    end
-
-    # @param [Hash] override_hash Values to override default hash with
-    # @return [Hash] Hash used in REST request based on data conversion
-    def hash_used_in_request(override_hash)
-      request = override_hash ? @default_hash.merge(override_hash) : @default_hash
-      if pascal_keys?
-        request.map { |k, v| [convert_to_pascal_case(k.to_s), v] }.to_h
-      else
-        request
-      end
-    end
-  end
-end
+# frozen_string_literal: true
+
+require_relative 'exchange_handler'
+require_relative 'rest_parameters'
+require_relative 'rest_parameters_defaults'
+require_relative 'rest_exchanger_factory'
+require_relative '../core_ext/hash'
+require_relative '../errors'
+require_relative 'handler_accessors'
+require_relative '../interpreter'
+require_relative 'response_extractor'
+require_relative 'request/rest_request'
+require 'json'
+require 'jsonpath'
+require 'nori'
+require 'erb'
+
+module Soaspec
+  # Wraps around Savon client defining default values dependent on the soap request
+  class RestHandler < ExchangeHandler
+    include ResponseExtractor
+    extend Soaspec::RestParameters
+    include Soaspec::RestParametersDefaults
+    extend Soaspec::RestExchangeFactory
+
+    # User used in making API calls
+    attr_accessor :api_username
+
+    # Setup object to handle communicating with a particular SOAP WSDL
+    # @param [Hash] options Options defining REST request. base_url, default_hash
+    def initialize(name = self.class.to_s, options = {})
+      raise "Base URL not set! Please set in class with 'base_url' method" unless base_url_value
+
+      if name.is_a?(Hash) && options == {} # If name is not set, use first parameter as the options hash
+        options = name
+        name = self.class.to_s
+      end
+      super
+      set_remove_keys(options, %i[api_username default_hash template_name])
+      @init_options = options
+      init_merge_options # Call this to verify any issues with options on creating object
+    end
+
+    # @return [Boolean] Whether REST method should have a payload
+    def payload?(overall_params)
+      case overall_params[:method]
+      when :post, :patch, :put
+        true
+      else
+        false
+      end
+    end
+
+    # @todo Use this in actually making the request
+    # At the moment this is just for one to manually view the parameters
+    # that will be used in making a request
+    # @return [RestRequest] Parameters used in making a request
+    def request_parameters(override_parameters)
+      overall_params = interpret_parameters(override_parameters)
+      request = { overall: overall_params, options: init_merge_options }
+      request[:body] = post_data(overall_params) if payload?(overall_params)
+      RestRequest.new(overall_params, init_merge_options, payload?(overall_params) ? post_data(overall_params) : nil)
+    end
+
+    # Interpret REST parameters given provided parameters and adding defaults, making
+    # transformations
+    #
+    # @param [Hash] request_parameters Parameters used in making a request
+    # @return [Hash] Request parameters merged with default values
+    def interpret_parameters(request_parameters)
+      request_parameters[:params] ||= {}
+      request_parameters[:method] ||= :post
+      suburl = request_parameters[:suburl]
+      if suburl
+        if suburl.is_a? Array
+          request_parameters[:suburl] = suburl.collect(&:to_s).join('/')
+        else
+          request_parameters[:suburl] = suburl.to_s
+        end
+      end
+      # Use q for query parameters. Nested :params is ugly, long and unclear
+      request_parameters[:params][:params] = request_parameters[:q] if request_parameters[:q]
+      request_parameters
+    end
+
+    # Override this with 'after_response' within class definition to perform an action
+    # after response is retrieved
+    # @param [RestClient::Response] _response Response to interpret to perform after block
+    def after_response(_response, _self); end
+
+    # Used in together with Exchange request that passes such override parameters
+    # @param [Hash] override_parameters Params to characterize REST request
+    # @option override_parameters [Hash] :params Extra parameters (E.g. headers)
+    # @option override_parameters [String] suburl URL appended to base_url of class
+    # @option override_parameters [Hash] :q Query for REST
+    # @option override_parameters [Symbol] :method REST method (:get, :post, :patch, etc)
+    # Following are for the body of the request
+    # @option override_parameters [Hash] :body Hash to be converted to JSON in request body
+    # @option override_parameters [String] :payload String to be passed directly in request body
+    # @option override_parameters [String] :template_name Path to file to be read via ERB and passed in request body
+    # @return [RestClient::Response] Response from making request
+    def make_request(override_parameters)
+      @merged_options ||= init_merge_options # TODO: Is this var needed? Can method be passed to resource creation?
+      test_values = interpret_parameters override_parameters
+      # In order for ERB to be calculated at correct time, the first time request is made, the resource should be created
+      @resource ||= RestClient::Resource.new(ERB.new(base_url_value).result(binding), @merged_options)
+      @resource_used = test_values[:suburl] ? @resource[test_values[:suburl]] : @resource
+
+      self.exception = nil # Remove any previously stored exception
+      begin
+        response = case test_values[:method]
+                   when :post, :patch, :put
+                     Soaspec::SpecLogger.info("request body: #{post_data(test_values)}")
+                     @resource_used.send(test_values[:method].to_s, post_data(test_values), test_values[:params])
+                   else # :get, :delete
+                     @resource_used.send(test_values[:method].to_s, test_values[:params])
+                   end
+      rescue RestClient::Exception => e
+        self.exception = e
+        raise e unless e.respond_to? :response
+
+        response = e.response
+      end
+      Soaspec::SpecLogger.info("response: \n  headers: #{response&.headers}\n  body: #{response}\n")
+      after_response(response, self)
+      response
+    end
+
+    # Add values to here when extending this class to have default REST options.
+    # See rest client resource at https://github.com/rest-client/rest-client for details
+    # It's easier to set headers via 'headers' accessor rather than here
+    # @return [Hash] Options adding to & overriding defaults
+    def rest_resource_options
+      {}
+    end
+
+    # Perform ERB on each header value
+    # @return [Hash] Hash from 'rest_client_headers' passed through ERB
+    def parse_headers
+      Hash[rest_client_headers.map do |header_name, header_value|
+        raise ArgumentError, "Header '#{header_name}' is null. Headers are #{rest_client_headers}" if header_value.nil?
+
+        [header_name, ERB.new(header_value).result(binding)]
+      end]
+    end
+
+    # Initialize value of merged options
+    # @return [Hash] Hash of merged options
+    def init_merge_options
+      options = rest_resource_options
+      options.merge! basic_auth_params if respond_to? :basic_auth_params
+      options[:headers] ||= {}
+      options[:headers].merge! parse_headers
+      options[:headers][:authorization] ||= ERB.new('Bearer <%= access_token %>').result(binding) if Soaspec.auto_oauth && respond_to?(:access_token)
+      options.merge(@init_options)
+    end
+
+    # @param [Hash] format Format of expected result.
+    # @return [Object] Generic body to be displayed in error messages
+    def response_body(response, format: :hash)
+      extract_hash response
+    end
+
+    # @return [Boolean] Whether response body includes String
+    def include_in_body?(response, expected)
+      response.body.include? expected
+    end
+
+    # @@return [Boolean] Whether the request found the desired value or not
+    def found?(response)
+      status_code_for(response) != 404
+    end
+
+    # @return [Boolean] Whether response contains expected value
+    def include_value?(response, expected)
+      extract_hash(response).include_value? expected
+    end
+
+    # @return [Boolean] Whether response body contains expected key
+    def include_key?(response, expected)
+      value_from_path(response, expected)
+    end
+
+    # @return [Integer] HTTP Status code for response
+    def status_code_for(response)
+      response.code
+    end
+
+    # Returns the value at the provided xpath
+    # @param [RestClient::Response] response
+    # @param [String] xpath Path to find elements from
+    # @param [String] attribute Attribute to find path for
+    # @return [Enumerable] Value inside element found through Xpath
+    def xpath_elements_for(response: nil, xpath: nil, attribute: nil)
+      raise ArgumentError unless response && xpath
+      raise "Can't perform XPATH if response is not XML" unless Interpreter.response_type_for(response) == :xml
+
+      xpath = prefix_xpath(xpath, attribute)
+      temp_doc = Nokogiri.parse(response.body).dup
+      if strip_namespaces? && !xpath.include?(':')
+        temp_doc.remove_namespaces!
+        temp_doc.xpath(xpath)
+      else
+        temp_doc.xpath(xpath, temp_doc.collect_namespaces)
+      end
+    end
+
+    # @return [Enumerable] List of values matching JSON path
+    def json_path_values_for(response, path, attribute: nil)
+      raise 'JSON does not support attributes' if attribute
+
+      JsonPath.on(response.body, path)
+    end
+
+    # Calculate all JSON path values based on rules. ',', pascal_case
+    # @param [RestClient::Response] response Response from API
+    # @param [Object] path Xpath, JSONPath or other path identifying how to find element
+    # @param [String] attribute Generic attribute to find. Will override path
+    # @param [Boolean] not_empty Whether to fail if result is empty
+    # @return [Array] Paths to check as first and matching values (List of values matching JSON Path) as second
+    def calculated_json_path_matches(path, response, attribute, not_empty: false)
+      path = add_pascal_path(path)
+      paths_to_check = path.split(',')
+      paths_to_check = paths_to_check.map { |path_to_check| prefix_json_path(path_to_check) }
+      matching_values = paths_to_check.collect do |path_to_check|
+        json_path_values_for(response, path_to_check, attribute: attribute)
+      end.reject(&:empty?)
+      raise NoElementAtPath, "No value at JSONPath '#{paths_to_check}' in '#{response.body}'" if matching_values.empty? && not_empty
+
+      matching_values.first
+    end
+
+    # Based on a exchange, return the value at the provided xpath
+    # If the path does not begin with a '/', a '//' is added to it
+    # @param [RestClient::Response] response Response from API
+    # @param [Object] path Xpath, JSONPath or other path identifying how to find element
+    # @param [String] attribute Generic attribute to find. Will override path
+    # @return [String] Value at Xpath
+    def value_from_path(response, path, attribute: nil)
+      path = path.to_s
+      case Interpreter.response_type_for(response)
+      when :xml
+        result = xpath_elements_for(response: response, xpath: path, attribute: attribute).first
+        raise NoElementAtPath, "No value at Xpath '#{prefix_xpath(path, attribute)}' in '#{response.body}'" unless result
+        return result.inner_text if attribute.nil?
+
+        return result.attributes[attribute].inner_text
+      when :json
+        matching_values = calculated_json_path_matches(path, response, attribute, not_empty: true)
+        matching_values.first
+      else # Assume this is a String
+        raise NoElementAtPath, 'Response is empty' if response.to_s.empty?
+
+        response.to_s[/#{path}/] # Perform regular expression using path if not XML nor JSON
+      end
+    end
+
+    # @return [Enumerable] List of values returned from path
+    def values_from_path(response, path, attribute: nil)
+      path = path.to_s
+      case Interpreter.response_type_for(response)
+      when :xml
+        xpath_elements_for(response: response, xpath: path, attribute: attribute).map(&:inner_text)
+      when :json
+        result = calculated_json_path_matches(path, response, attribute)
+        result || []
+        # json_path_values_for(response, path, attribute: attribute)
+      else
+        raise "Unable to interpret type of #{response.body}"
+      end
+    end
+
+    # @return [RestClient::Request] Request of API call. Either intended request or actual request
+    def request(response)
+      return 'Request not yet sent' if response.nil?
+
+      response.request
+    end
+
+    # Work out data to send based upon payload, template_name, or body
+    # @return [String] Payload to send in REST request
+    def post_data(test_values)
+      data = if @request_option == :hash && !test_values[:payload]
+               test_values[:payload] = JSON.generate(hash_used_in_request(test_values[:body])).to_s
+             elsif @request_option == :template
+               test_values = test_values[:body].dup if test_values[:body]
+               test_values = IndifferentHash.new(test_values) # Allow test_values to be either Symbol or String
+               Soaspec::TemplateReader.new.render_body(template_name, binding)
+             else
+               test_values[:payload]
+             end
+      # Soaspec::SpecLogger.info "Request Empty for '#{@request_option}'" if data.strip.empty?
+      data
+    end
+
+    # @param [Hash] override_hash Values to override default hash with
+    # @return [Hash] Hash used in REST request based on data conversion
+    def hash_used_in_request(override_hash)
+      request = override_hash ? @default_hash.merge(override_hash) : @default_hash
+      if pascal_keys?
+        request.map { |k, v| [convert_to_pascal_case(k.to_s), v] }.to_h
+      else
+        request
+      end
+    end
+  end
+end